Temperature-controlling means for plate-casting boxes.



H. F. BE-CHMAN. TEMPERAWRE comnmumfi memes Fon PLATE CASTING BOXES.

Patented Sept. 12, 1916.

APPLICM'WH HLED APR. H. i915- HENRY F. BECHMAN, OF BATTLE CREEK,MICHIGAN, ASSIGNQE T DUPLEX PRINTING PRESS COMPANY, 015 BATTLE CREEK,MICI-IIG.A}.N, A CORPORATION OF MICHIGAN.

TEMPERATURE-CONTROLLING MEAN S FOR PLATE-CASTING BOXES. 7

Mel ssa.

To all whom it may concern Be it known that I, 'HENRY F. Brennan, acitizen of the United States, residing at Battle Creek, in the county ofCalhoun and State of Michigan, have invented certain new and usefulImprovements in Temperature-Controlling Means for Plate-Casting Boxes;and Ihereby declare that the following is a full, clear, and eXactdescription thereof, reference being had to the accompanying drawings,which form part of this specification.

1 This invention relates to stereotype plate casting boxes, and itsobject is to maintain the parts ofthe casting box at a temperature mostsuitable for plate casting and prevent overheating thereof, so thatplates may be cast in such boxes more uniformly and with greaterrapidity than has been heretofore practical with casting boxes of thesame general type but to which this invention has not been applied.

The invention is particularly designed for use in connection withtubular plate stereotype casting boxes of the type shown in my PatentNo. 945,678, of January 4., 1910, but is applicable to other forms ofplate casting boxes. I will explain the invention as applied to such atubular plate casting box, and set forth in the claims the essentialfeatures of the invention for which I desire protection. i

In the accompanying drawings forming part of this specification: Figure1 is asectional elevation of part of a tubular plate 4 casting boxprovided with my novel te1nperature regulating means.

Fig. 2 is a deail sectional view of such box showing the core inposition for removing a, cast plate.

Fig. 3 is a detail transverse section on line 3-3, Fig. 1.

The box indicated-in the drawings is a tubular plate-casting box of thetype shown in my aforesaid patent and comprises a base 7 to which aresecured side frames 9 upon which is mounted a drag 1 provided witha.semi-cylindric recess in its front face to accommodate a tiltable core2, when the latter is in casting position.

0 the drag 1 is hinged a cope 1 which can be swung t0 and from the dragand has a semi-cylindric recess in its inner face so that when the boxis closed,- as indicated in Fig. 3, the opposed recesses 1n the dragtherein.

Specification of Letters Patent. P 't t Q Se t 12 11916 Applicationfiled April 17, 1915.

Serial No. 22,154.

opened said core can betilted outwardly to a substantially horizontalposition, as indicated in Fig. 2, to facilitate the removal of the castplate. Such core has been heretofore made hollow and provided withinterior pipes suitably connected with exterior water supply and exhaustpipes by which water can be circulated through the box during thecasting operations.

The parts thus far described are substantiallythe same as those shown inmy aforesaid patent and are not specifically claimed herein.

It is desirable in casting boxes both to prevent overheating of the partwith which the molten stereotype metal directly contacts during thecasting operations, and at the same time to prevent such sudden orexcessive changes in temperature of such parts as would affect theuniformity of plates cast The water circulating systems heretoforeemployed have not given the desired results. In applying my invention tosuch a box the said core is made hollow and preferably has a passage 3in its bottom which opens into the chamber in the core at the side whichwill be highest when the core is lowered (as inFig. 2), and whichpassage 3 communicates with a port 3 in one of the core trunnions 3,which is connected, at the outer end of the trunnion,'to an elbow at,and said elbow i may be connected by a flexible pipeor hose section 4:to a pipe 5 leading into a reservoir or tank 6 mounted on any suitablesupport, as 8, at any desired elevation.

The tank is preferably so situated with respect to the box that thefluid will circulate through the connecting pipe from the tank to thebox and a suiiicient supply of cooling fluid from the tank will bemaintained within the hollow member of the box.

The pipe 5 preferably extends within the tank to a point above thenormal water level therein, (which'is indicated at w in Fig, 1), and thepart of said pipe within the tank is preferably numerously 'perforated,as inii) I use of Water as the heating or cooling-me ing thecastingoperations.

dicat'ed. in the drawing. A water gage 6* attached to the tank enablesthe proper level of water therein to be determined.

' The Water or medium in the tank may be initially heated to a desiredtemperature by external means, not shown, and will ordinarily be heatedby the core which is heated by the molten metal during the castingoperations. When I herein refer to water do not intend to restrict theinvention to The temperature of the water in the tank is maintained atabout boiling point by the heat derived from the molten metal around thecore during the plate casting operations; and on the other hand thetemperature of the core will be maintained at an approximately uniformtemperature by the body of hot water constantly maintained therein atapproximately boiling point. The lowering and raising of the core causesan ebb and flow of hot water into the core each time the core is loweredto remove a, plate; which maintains the core at a safe practicallyuniform casting temperature without requiring a constant circulation ofwater or steam through the box.

It will be seen that a considerable body of water remains in the core atall times, and if any steam collects in the corewhen the box is closedits escape is facilitated when the core is lowered, and water enters thecore immediately after any steam escapesinto the tank.

A casting box equipped with this invcntion can be maintained at atemperature of about 200, which is very desirable, for if the box ischilled suddenly or irregularly the plates are chilled unequallywhilebeing cast and must therefore be machined before they can be used.Further my invention prevents overheating of the box, and at atemperature of about 200 the pla-teswill not stick; but if the box wasnot protected from overheating it might become so hot that thestereotype metal would adhere thereto causing great annoyance and delay;but with boxes equipped with my invention, plates can" be cast as fastas the operators can manipulate the box.

memo r \Vhat I claim is:

1. In a stereotype plate casting apparatus, the combination of a castingbox having a hollow membena tank exterior to the box, and a single fluidconduit, connecting ,s aid tank with the lower part of sad member,substantially as described.

3. In stereotype casting apparatus; the combination of abox having ahollow member, a tank exterior to the box, and a pipe connecting saidtank with the lower end of said hollow member, said pipe serving bothfor inlet and outlet of fluid to and from saidmember whereby asubstantially constant supply of fluid may be maintained within saidhollow member.

14-. In stereotype casting apparatus; the combination of a box having ahollow tiltable member provided with an opening in its lower end, atankexterior to the box, and a pipe connecting said tank with theopening in said member, said pipe serving both for inlet and outlet offluid to and from said member, whereby a substantially constant supplyof fluid may be maintained within said llOllOWflllc": 1. er.

5. In stereotype east apparatus; the combination of a box he a hollowcore and provided with a trunnion having an opening communicating withthe interior of the core; a tank exterior to the box, and a pipeconnecting said tank with the opening in said trunnion, said pipeserving to HENRY r; BECHMAN.

Witnesses:

FRANK SYLONE,

Onanmcs A. Guanine.

